79510791387 has 8 divisors (see below), whose sum is σ = 106071362320. Its totient is φ = 52978707360.

The previous prime is 79510791377. The next prime is 79510791401. The reversal of 79510791387 is 78319701597.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79510791387 - 2⁶ = 79510791323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79510791317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7115212 + ... + 7126377.

It is an arithmetic number, because the mean of its divisors is an integer number (13258920290).

Almost surely, 2^79510791387 is an apocalyptic number.

79510791387 is a deficient number, since it is larger than the sum of its proper divisors (26560570933).

79510791387 is a wasteful number, since it uses less digits than its factorization.

79510791387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14243453.

The product of its (nonzero) digits is 3333960, while the sum is 57.

The spelling of 79510791387 in words is "seventy-nine billion, five hundred ten million, seven hundred ninety-one thousand, three hundred eighty-seven".